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Business Combinations (Details)	3 Months Ended
	Mar. 31, 2013 Hertz car rental franchise item	Mar. 31, 2014 Automotive retail franchise item
Business combinations
Number of acquired franchises	1	1

X

- Definition

Number of franchises acquired.

+ References

No definition available.

+ Details

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Period Type:	duration

X

- Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
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Period Type:	duration